VERITAS Volume Manager 3.1 for HP-UX Release Notes

Known Problems and Workarounds

Chapter 18

Known Problems and Workarounds

VxVM Treats Alternate Paths of an Active/Active Array as Available

Disks (JAGad51475)

• Problem: Without the full VxVM license (B9116AA) installed, DMP for active/active disk

arrays is not available. VxVM commands (for example, vxdisk (1M) and vmsa (1M) will

show all the paths to the LUNs in existence. However, the commands do not show the

association for the alternate paths. Therefore, it is possible to use an alternative path as a

new disk, and in doing so, to corrupt the VxVM private regions, and possibly the public

regions. It is therefore important to be aware of the various paths to each LUN.

• Workaround: Use the following command to check for alternate paths to the same disk.

Disks shown with the same

diskid

are most likely to be links to the same LUN.

# vxdisk -s list | grep -i

disk

A patch is being prepared to address this problem, but the patch number was not known

when this version of this document was written. See “Patches and Fixes in This Version”

for instructions on ﬁnding the latest patches. The online version of these Release Notes on

http://docs.hp.com will be updated to include the patch number when it is known.

Cannot Enable DMP Active/Active Subpaths Without Reboot After

Installing B9116AA License (JAGad51912)

• Problem: VxVM does not recognize active subpaths to an active/active device after the

VERITAS Volume Manager 3.1 for HP-UX (B9116AA) license is installed.

• Workaround: Reboot your system after installing B9116AA to enable DMP active/active

functionality.